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saveliy_v [14]
4 years ago
8

A sample of a pure compound that weighs 60.3 g contains 20.7 g Sb (antimony) and 39.6 g F (fluorine). What is the percent compos

ition of fluorine
Chemistry
1 answer:
Volgvan4 years ago
4 0

Answer:

The percent composition of fluorine is 65.67%

Explanation:

Percent Composition is a measure of the amount of mass an element occupies in a compound. It is measured in percentage of mass.

That is, the percentage composition is the percentage by mass of each of the elements present in a compound.

The calculation of the percentage composition of an element is made by:

percent composition element A=\frac{total mass of element A}{mass of compound} *100

In this case, the percent composition of fluorine is:

percent composition of fluorine=\frac{39.6 g}{60.3 g} *100

percent composition of fluorine= 65.67%

<u><em>The percent composition of fluorine is 65.67%</em></u>

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A teacher makes the following statement. "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed
Natali5045456 [20]

Answer: The most likely topic the teacher is taking about is distillation of a mixture

Explanation:

The correct question is:

Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C,"

What topic is the teacher most likely talking about?

a. distillation of a mixture

b. filtration of a pure substance

c.evaporation of a mixture

d. sorting of a pure substance

Explanation:

Distillation is the process of separating components of a mixture based on different boiling points.

To separate a mixture of liquids, the liquid can be heated to force components, which have different boiling points, into the gas phase. The gas is then condensed back into liquid form and collected.

Types of distillation include simple distillation and fractional distillation(different volatile 'fractions' are collected as they are produced). Simple distillation may be used when the boiling points of two liquids are significantly different from each other or to separate liquids from solids or nonvolatile components. Fractional distillation is used when the boiling points of the components of a mixture are close to each other.

From the question, it's the components of petroleum that are being separated, which can be carried out using fractional distillation.

The first component that is collected is

Gasoline which boils at a relatively low temperature (about 150°C), followed by

kerosene which is removed at around 200°C, followed by diesel oil at 300°C and then fuel oil at around 370°C.

3 0
3 years ago
Calculate the volume in milliliters of a 0.420mol / L barlum chlorate solution that contains 25.0 g of barium chlorate (Ba(ClO 3
Pachacha [2.7K]

<u>Answer:</u> The volume of barium chlorate is 195.65 mL

<u>Explanation:</u>

To calculate the volume of solution, we use the equation used to calculate the molarity of solution:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

Given mass of barium chlorate = 25.0 g

Molar mass of barium chlorate = 304.23 g/mol

Molarity of solution = 0.420 mol/L

Volume of solution = ?

Putting values in above equation, we get:

0.420mol/L=\frac{25.0\times 1000}{304.23\times V}\\\\V=\frac{25.0\times 1000}{304.23\times 0.420}=195.65mL

Hence, the volume of barium chlorate is 195.65 mL

6 0
3 years ago
Liquid junction potential arise due to?<br>​
Semmy [17]

Answer:

liquid junction potentials

when a cell contains a boundary between two electrolytic solutions of different composition or concentration, a liquid junction potential is developed due to the "diffusion of the various components at characteristic rates in the boundary zone."

#<em>c</em><em>a</em><em>r</em><em>r</em><em>y</em><em>o</em><em>n</em><em>l</em><em>e</em><em>a</em><em>r</em><em>n</em><em>i</em><em>n</em><em>g</em>

6 0
3 years ago
2. What are some strengths and limitations of the constellations
Snezhnost [94]

hi

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3 0
3 years ago
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Help!!! ASAP helppppp
qwelly [4]

Answer:

Lakes

Explanation:

Because oceans aren't fresh water

7 0
3 years ago
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